Our Automatic Readability
takes a sample of your writing and calculates the number of
sentences, words, syllables, and characters in your sample. Our program takes
the output of these numbers and plugs them into seven popular readability
formulas. These readability formulas (see below) will let you know the reading
level and grade level of your text and help you determine if your audience can
read your writing.
We also have separate readability
tools to calculate grade levels using the Fry Graph, Raygor Estimate Graph,
Spache Formula, and New Dale-Chall Formula, located here:
Readability Calculators and Text Tools
: Paste in
a sample of text and click "CHECK TEXT READABILITY." A sufficient sample size
consists of 4-5 full sentences; approximately 200 - 600 words total. For larger
texts, such as books, manuals, or dissertations, pull 1-2 sample sizes from
each chapter. (Note: We limit the sample size to 3000 words. Sample sizes over
3K words are truncated.)
Paste a sample of
plain text in the box. Your sample can be between 150-3000 words. We do not
store or reuse your text in any way.
Our free readability formula tool
will analyze your text and output the results based on these readability
formulas. Our tool will also help you determine the grade level for your
Flesch Reading Ease formula
will output a number from 0 to 100
a higher score indicates easier reading. An average
document has a Flesch Reading Ease score between 6 - 70.
As a rule
of thumb, scores of 90-100
can be understood by an average 5th grader.
8th and 9th grade students can understand documents with a score of
; and college graduates can understand documents with a score of
Flesch-Kincaid Grade Level
outputs a U.S. school grade level; this
indicates the average student in that grade level can read the text. For
example, a score of 7.4 indicates that the text is understood by an average
student in 7th grade. 3.
Fog Scale (Gunning FOG Formula)
is similar to the Flesch scale in that
it compares syllables and sentence lengths. A Fog
score of 5 is readable, 10 is hard, 15 is difficult, and 20 is very
Based on its name, 'Foggy' words are words that contain
or more syllables. 4.
outputs a U.S. school grade level; this indicates the
average student in that grade level can read the text. For example, a score of
7.4 indicates that the text is understood by an average student in 7th grade.
relies on characters instead of syllables per word
and sentence length. This formula will output a grade. For example, 10.6 means
your text is appropriate for a 10-11th grade high school student. 6.
outputs a number which approximates the grade level
needed to comprehend the text. For example, if the ARI outputs the number 3, it
means students in 3rd grade (ages 8-9 yrs. old) should be able to comprehend
the text. 7.
is a readability formula for English text, originally
developed for the United States Air Force to help them calculate the
readability of their technical manuals. Linsear Write Formula is specifically
designed to calculate the United States grade level of a text sample based on
sentence length and the number words used that have three or more